yurka--To make the logon window go away,
http://pcsupport.about.com/od/tipstr...xppassword.htm
Or use TweakUI for XP
http://www.microsoft.com/windowsxp/d...powertoys.mspx
Click on the + net to the LogOn line in the tree--then AutoLogon. Follow directions.
P.S. when you turn the power on or off at the tower you are not causing a voltage surge. When the power goes off because of a problem at the power company there may be a surge, especially when the power comes back on. Similarly when lightning strikes near you.